Java Code Examples for com.github.mikephil.charting.components.Legend#setCustom()

/**
 * date: 2019/7/31
 * author: chenli
 * description: 刷新均线图标值
 */
private void refreshTopChartLegend(int index) {
    List<LegendEntry> legendEntries = new ArrayList<>();
    for (int i = 0; i < mas.size(); i++) {
        int para = mas.get(i);
        Entry entry = mLineData.getDataSetByIndex(i).getEntryForXValue(index, 0.0f);
        String data = ":";
        if (entry != null) data = data + MathUtils.round(entry.getY()+"", 2);
        LegendEntry ma = new LegendEntry("MA" + para + data, Legend.LegendForm.NONE,
                NaN, NaN, null, mColorMas[i]);
        legendEntries.add(ma);
    }
    Legend legend = mTopChartViewBase.getLegend();
    legend.setCustom(legendEntries);
    legend.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
    legend.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
}
 

/**
 * date: 2019/7/31
 * author: chenli
 * description: 刷新中部图标值
 */
protected void refreshChartLegend(int index){
    Map<String, KlineEntity.DataEntity> dataEntities = mKlineEntity.getData();
    int middleIndex = index;
    if (!CURRENT_DAY_FRAGMENT.equals(mFragmentType)) middleIndex = middleIndex + mBaseIndex;
    KlineEntity.DataEntity dataEntity = dataEntities.get(String.valueOf(middleIndex));
    if (dataEntity != null){
        List<LegendEntry> legendEntriesMiddle = new ArrayList<>();
        legendEntriesMiddle.add(new LegendEntry("OI:"+dataEntity.getClose_oi(), Legend.LegendForm.NONE,
                NaN, NaN, null, mOIColor));
        legendEntriesMiddle.add(new LegendEntry("VOL:"+dataEntity.getVolume(), Legend.LegendForm.NONE,
                NaN, NaN, null, mIncreasingColor));
        Legend legendMiddle = mMiddleChartViewBase.getLegend();
        legendMiddle.setCustom(legendEntriesMiddle);
        legendMiddle.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
        legendMiddle.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
    }

    Float emasF = mEMAs.get(index);
    Float emalF = mEMAl.get(index);
    if (emasF != null && emalF != null){
        float emas = mEMAs.get(index);
        float emal = mEMAl.get(index);
        String dif = MathUtils.round((emas - emal) + "", 2);
        String dea = MathUtils.round(mDEA.get(index) + "", 2);
        List<LegendEntry> legendEntriesBottom = new ArrayList<>();
        legendEntriesBottom.add(new LegendEntry("MACD(12,26,9)" , Legend.LegendForm.NONE,
                NaN, NaN, null, mDeaColor));
        legendEntriesBottom.add(new LegendEntry("DIFF:"+dif, Legend.LegendForm.NONE,
                NaN, NaN, null, mDiffColor));
        legendEntriesBottom.add(new LegendEntry("DEA:"+dea, Legend.LegendForm.NONE,
                NaN, NaN, null, mDeaColor));
        Legend legendBottom = mBottomChartViewBase.getLegend();
        legendBottom.setCustom(legendEntriesBottom);
        legendBottom.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
        legendBottom.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
    }

}
 

/**
 * More details about legend customization: https://github.com/PhilJay/MPAndroidChart/wiki/Legend
 */
@ReactProp(name = "legend")
public void setLegend(T chart, ReadableMap propMap) {
    Legend legend = chart.getLegend();

    if (BridgeUtils.validate(propMap, ReadableType.Boolean, "enabled")) {
        legend.setEnabled(propMap.getBoolean("enabled"));
    }

    // Styling
    if (BridgeUtils.validate(propMap, ReadableType.String, "textColor")) {
        legend.setTextColor(Color.parseColor(propMap.getString("textColor")));
    }
    if (BridgeUtils.validate(propMap, ReadableType.Number, "textSize")) {
        legend.setTextSize((float) propMap.getDouble("textSize"));
    }
    if (BridgeUtils.validate(propMap, ReadableType.String, "fontFamily") ||
            BridgeUtils.validate(propMap, ReadableType.Number, "fontStyle")) {
        legend.setTypeface(BridgeUtils.parseTypeface(chart.getContext(), propMap, "fontStyle", "fontFamily"));
    }

    // Wrapping / clipping avoidance
    if (BridgeUtils.validate(propMap, ReadableType.Boolean, "wordWrapEnabled")) {
        legend.setWordWrapEnabled(propMap.getBoolean("wordWrapEnabled"));
    }
    if (BridgeUtils.validate(propMap, ReadableType.Number, "maxSizePercent")) {
        legend.setMaxSizePercent((float) propMap.getDouble("maxSizePercent"));
    }

    // Customizing
    if (BridgeUtils.validate(propMap, ReadableType.String, "position")) {
        legend.setPosition(LegendPosition.valueOf(propMap.getString("position").toUpperCase()));
    }
    if (BridgeUtils.validate(propMap, ReadableType.String, "form")) {
        legend.setForm(LegendForm.valueOf(propMap.getString("form").toUpperCase()));
    }
    if (BridgeUtils.validate(propMap, ReadableType.Number, "formSize")) {
        legend.setFormSize((float) propMap.getDouble("formSize"));
    }
    if (BridgeUtils.validate(propMap, ReadableType.Number, "xEntrySpace")) {
        legend.setXEntrySpace((float) propMap.getDouble("xEntrySpace"));
    }
    if (BridgeUtils.validate(propMap, ReadableType.Number, "yEntrySpace")) {
        legend.setYEntrySpace((float) propMap.getDouble("yEntrySpace"));
    }
    if (BridgeUtils.validate(propMap, ReadableType.Number, "formToTextSpace")) {
        legend.setFormToTextSpace((float) propMap.getDouble("formToTextSpace"));
    }

    // Custom labels & colors
    if (BridgeUtils.validate(propMap, ReadableType.Map, "custom")) {
        ReadableMap customMap = propMap.getMap("custom");
        if (BridgeUtils.validate(customMap, ReadableType.Array, "colors") &&
                BridgeUtils.validate(customMap, ReadableType.Array, "labels")) {

            ReadableArray colorsArray = customMap.getArray("colors");
            ReadableArray labelsArray = customMap.getArray("labels");

            if (colorsArray.size() == labelsArray.size()) {
                // TODO null label should start a group
                // TODO -2 color should avoid drawing a form
                String[] labels = BridgeUtils.convertToStringArray(labelsArray);
                String[] colors = BridgeUtils.convertToStringArray(colorsArray);

                int[] colorsParsed = new int[colors.length];
                for (int i = 0; i < colors.length; i++) {
                    colorsParsed[i] = Color.parseColor(colors[i]);
                }

                legend.setCustom(colorsParsed, labels);
            }
        }
    }

    // TODO resetCustom function
    // TODO extra

    chart.invalidate();     // TODO is this necessary? Looks like enabled is not refreshing without it
}